books.google.com - An account of the Maryland Campaign of 1862. It focuses on military policy and strategy, examining the context necessary to understand that strategy and the circumstances under which the two commanders, Robert E. Lee and George B. McClellan, laboured....https://books.google.com/books/about/Taken_at_the_Flood.html?id=FaFFBun_jC8C&q=artillery&utm_source=gb-gplus-shareTaken at the Flood